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![James Almer](/assets/img/avatar_default.png)
Reviewed-by: Michael Niedermayer <michaelni@gmx.at> Signed-off-by: James Almer <jamrial@gmail.com>
145 lines
5.5 KiB
C
145 lines
5.5 KiB
C
/*
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* Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
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* Copyright (c) 2013 Paul B Mahol
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/attributes.h"
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#include "libavutil/x86/cpu.h"
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#include "libavutil/x86/asm.h"
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#include "libavfilter/vf_noise.h"
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#if HAVE_INLINE_ASM
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static void line_noise_mmx(uint8_t *dst, const uint8_t *src,
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const int8_t *noise, int len, int shift)
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{
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x86_reg mmx_len= len & (~7);
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noise += shift;
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__asm__ volatile(
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"mov %3, %%"REG_a" \n\t"
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"pcmpeqb %%mm7, %%mm7 \n\t"
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"psllw $15, %%mm7 \n\t"
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"packsswb %%mm7, %%mm7 \n\t"
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".p2align 4 \n\t"
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"1: \n\t"
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"movq (%0, %%"REG_a"), %%mm0 \n\t"
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"movq (%1, %%"REG_a"), %%mm1 \n\t"
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"pxor %%mm7, %%mm0 \n\t"
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"paddsb %%mm1, %%mm0 \n\t"
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"pxor %%mm7, %%mm0 \n\t"
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"movq %%mm0, (%2, %%"REG_a") \n\t"
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"add $8, %%"REG_a" \n\t"
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" js 1b \n\t"
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:: "r" (src+mmx_len), "r" (noise+mmx_len), "r" (dst+mmx_len), "g" (-mmx_len)
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: "%"REG_a
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);
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if (mmx_len != len)
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ff_line_noise_c(dst+mmx_len, src+mmx_len, noise+mmx_len, len-mmx_len, 0);
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}
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#if HAVE_6REGS
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static void line_noise_avg_mmx(uint8_t *dst, const uint8_t *src,
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int len, const int8_t * const *shift)
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{
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x86_reg mmx_len = len & (~7);
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__asm__ volatile(
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"mov %5, %%"REG_a" \n\t"
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".p2align 4 \n\t"
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"1: \n\t"
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"movq (%1, %%"REG_a"), %%mm1 \n\t"
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"movq (%0, %%"REG_a"), %%mm0 \n\t"
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"paddb (%2, %%"REG_a"), %%mm1 \n\t"
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"paddb (%3, %%"REG_a"), %%mm1 \n\t"
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"movq %%mm0, %%mm2 \n\t"
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"movq %%mm1, %%mm3 \n\t"
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"punpcklbw %%mm0, %%mm0 \n\t"
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"punpckhbw %%mm2, %%mm2 \n\t"
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"punpcklbw %%mm1, %%mm1 \n\t"
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"punpckhbw %%mm3, %%mm3 \n\t"
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"pmulhw %%mm0, %%mm1 \n\t"
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"pmulhw %%mm2, %%mm3 \n\t"
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"paddw %%mm1, %%mm1 \n\t"
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"paddw %%mm3, %%mm3 \n\t"
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"paddw %%mm0, %%mm1 \n\t"
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"paddw %%mm2, %%mm3 \n\t"
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"psrlw $8, %%mm1 \n\t"
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"psrlw $8, %%mm3 \n\t"
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"packuswb %%mm3, %%mm1 \n\t"
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"movq %%mm1, (%4, %%"REG_a") \n\t"
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"add $8, %%"REG_a" \n\t"
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" js 1b \n\t"
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:: "r" (src+mmx_len), "r" (shift[0]+mmx_len), "r" (shift[1]+mmx_len), "r" (shift[2]+mmx_len),
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"r" (dst+mmx_len), "g" (-mmx_len)
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: "%"REG_a
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);
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if (mmx_len != len){
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const int8_t *shift2[3] = { shift[0]+mmx_len, shift[1]+mmx_len, shift[2]+mmx_len };
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ff_line_noise_avg_c(dst+mmx_len, src+mmx_len, len-mmx_len, shift2);
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}
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}
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#endif /* HAVE_6REGS */
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static void line_noise_mmxext(uint8_t *dst, const uint8_t *src,
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const int8_t *noise, int len, int shift)
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{
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x86_reg mmx_len = len & (~7);
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noise += shift;
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__asm__ volatile(
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"mov %3, %%"REG_a" \n\t"
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"pcmpeqb %%mm7, %%mm7 \n\t"
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"psllw $15, %%mm7 \n\t"
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"packsswb %%mm7, %%mm7 \n\t"
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".p2align 4 \n\t"
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"1: \n\t"
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"movq (%0, %%"REG_a"), %%mm0 \n\t"
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"movq (%1, %%"REG_a"), %%mm1 \n\t"
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"pxor %%mm7, %%mm0 \n\t"
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"paddsb %%mm1, %%mm0 \n\t"
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"pxor %%mm7, %%mm0 \n\t"
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"movntq %%mm0, (%2, %%"REG_a") \n\t"
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"add $8, %%"REG_a" \n\t"
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" js 1b \n\t"
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:: "r" (src+mmx_len), "r" (noise+mmx_len), "r" (dst+mmx_len), "g" (-mmx_len)
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: "%"REG_a
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);
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if (mmx_len != len)
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ff_line_noise_c(dst+mmx_len, src+mmx_len, noise+mmx_len, len-mmx_len, 0);
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}
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#endif /* HAVE_INLINE_ASM */
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av_cold void ff_noise_init_x86(NoiseContext *n)
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{
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#if HAVE_INLINE_ASM
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int cpu_flags = av_get_cpu_flags();
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if (INLINE_MMX(cpu_flags)) {
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n->line_noise = line_noise_mmx;
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#if HAVE_6REGS
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n->line_noise_avg = line_noise_avg_mmx;
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#endif
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}
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if (INLINE_MMXEXT(cpu_flags)) {
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n->line_noise = line_noise_mmxext;
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}
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#endif
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}
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